<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
        <el-row>
            <el-col>
                <el-button type="primary">添加角色</el-button>
            </el-col>
        </el-row>

        <!-- 角色列表区域 -->

        <el-table :data="roleslist" border stripe>
            <!-- 展开列 -->
            <el-table-column type="expand">
                <template slot-scope="scope">
                    <el-row :class="['bdbottom',i1 === 0 ? 'bdtop' : '','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                        <!-- 渲染一级权限 -->
                        <el-col :span="5">
                            <el-tag>{{item1.autoName}}</el-tag>
                            <i class="el-icon-caret-right"></i>
                        </el-col>
                        <!-- 渲染二级和三级权限 -->
                        <el-col :span="19" :class="[i2 === 0 ? '' : 'bdtop','vcenter']">
                            <el-row v-for="(item2,i2) in item1.children" :key="item2.id">
                            <el-col :span="6">
                                <el-tag type="success">{{item2.autoName}}</el-tag>
                                <i class="el-icon-caret-right"></i> 
                            </el-col>
                            <el-col :span="18">
                                <el-tag v-for="(item3,i3) in item2.children" 
                                :key="item3.id"
                                type="warning">
                                <el-tag>{{item3.autoName}}</el-tag>
                                </el-tag>
                            </el-col>
                            </el-row>
                        </el-col>
                    </el-row>
                </template>    
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="角色名称" prop="roleName"></el-table-column>
            <el-table-column label="角色描述" prop="roleDec"></el-table-column>
            <el-table-column label="操作" width="300px">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>          
                    <el-button type="primary" icon="el-icon-delete" size="mini">删除</el-button>          
                    <el-button type="primary" icon="el-icon-setting" size="mini">分配权限</el-button>          
                </template>
            </el-table-column>
        </el-table>

    </el-card>
    </div>
</template>

<script>
export default {
    data(){
        return{
            //所有角色列表数据
            roleslist:[]
        }
    },
    created(){
        this.getRolesList()
    },
    methods:{
        async getRolesList(){
            const {data:res} = await this.$http.get('roles')

            if(res.meta.status !== 200){
                return this.$message.error('获取角色列表失败！');
            }
            this.roleslist = res.data

            // console.log(this.roleslist);
        }
    }
}
</script>

<style lang="less" scoped>
.el-tag{
    margin: 7px;
}
.bdtop{
    border-top: 1px solid#eee;
}
.bdbottom{
    border-bottom: 1px solid#eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>